(19)
(11) EP 0 118 844 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
09.01.1985 Bulletin 1985/02

(43) Date of publication A2:
19.09.1984 Bulletin 1984/38

(21) Application number: 84102173

(22) Date of filing: 01.03.1984
(84) Designated Contracting States:
CH DE FR GB LI

(30) Priority: 04.03.1983 JP 3645283

(71) Applicant: HITACHI, LTD.
 ()

(72) Inventors:
  • Watanabe, Ryuji
     ()
  • Wada, Akira
     ()
  • Ando, Hisashi
     ()
  • Shimizu, Seiki
     ()
  • Kurosawa, Yukio
     ()
  • Iwashita, Kiyoji
     ()

   


(54) Vacuum switch and method of manufacturing the same


(57) Disclosed is a vacuum switch having a container (11,12, 12') and a pair of contact electrodes (13,14), and a method of manufacturing the same, in which at least one of the contact electrodes is constituted by a member made up of a skeleton containing cobalt as its principal component with pores into which a copper alloy containing copper as its principal component, silver, and a low melting point and high vapor pressure element having substantially no or very low solid-solubility with respect to the copper at a room temperature is impregnated.






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